Manually operated hydraulic lock



Nov. 12, 1940, I D. B. DlMlCK MANUALLY OPERATED HYIDRAULIC LOCK 2 sheets-sheet 1 Filed April 7, 1939 PatentedNov. 12, I

UNITED STATE s PATENT i orrics,

MANUALLY ornnarnonmnnumctocx Daniel B. Dimick, Newton, Mass., assi'gn'or to Dimick-Mosher Products Company,

Boston,

The present invention relates to improvements in manuallyvoperated hydraulic locks, and more particularly refers to such a lock applied to modern automobile doors. 1 l

It is an object of the invention to provide for an arrangement of locks for the doors of automobiles all operated and controlled from a central or master station, located, for instance, within easy reach of the driver's compartment of the automobile whereby the driver or chauffeur by a simple manipulation may cause all of the locks on all the doors of the automobile to be thrown into the locked position; the device further contemplating the use of hydraulic, mechanical connections which will insure the maintenance of the locks in the projected locked condition without regard to vibration and jars to which a vehicle is subjected incident to its ordinary travel over the roadway, thereby preventing the casual or accidental opening of doors; and preventing also the deliberate or inadvertent unlocking and opening of the doors byeliildren riding particularly in the back seats of vehicles where their actions cannot be supervised or repressed by the driver of the vehicle.

The invention therefore has for an additional object of providing a. safety arrangement in connection with the locks of vehicle doors whereby children and others will be virtually imprisoned until such time as the car is safely stopped at a destination, whereupon the driver may manipulate his master or control device to cause a positiveretraction of all the locking bolts of the doors.

With the foregoing andv other objects in view, the invention will be more fully describedhereinafter, andwill be more particularly pointed out in the claims appended hereto.

In the drawings, wherein like'symbols refer to like or corresponding parts throughout the sever'al'views.

Figure l is a fragmentary side elevation of an automobile equipped with a system of hydraulic lock control constructed in accordance with the present invention.

Figure 2 is atop plan viewof the same with partsv broken away and parts shown in section and with the locking bolts projected.

Figure 3 is a front elevation of the face plate of oneof the locking units locking bolt. V

Figure-4 is a vertical section taken onthe line 5' 5. 1s anenlargedplan view,-'with parts broken away and parts shown in section, of the master or control device. T

Figure 6 is a longitudinal vertical on the line 6-8 inFlgure 5.

I Figure 7 is a fragmentary front elevation of the section taken and also showing the.

site position from Figure 6. v

Figure 8 is an end elevation of the master or control device, and

Figure 9 is a plan view of the master cylinderend head showing the plunger rod in section.

Referring more particularly to the drawings, l0 designatesgenerally an automobile having front doors II and rear .doors l2. The front doors have lock' units A and the rear doors I! have rear door lock unitsB. Both the locking units A and B are hydraulic and may be of the construction shown more particularly in Figures Y 3 and 4 to which specific reference will herein- I after he had.

These locking units are'connected bybranch pipes 13 and H with a transmission pipe I5 leading to the master or control device indicated generally at C,- which device is shown more particularly in Figures 5 to 9 inclusive, to which more specific reference will hereinafter be had. The master or control device C is preferably located in a compartment I 6 just forward of the instrument board I! through which projects a handle, a handcrank or any other operating member l8 disposed in a position accessible to the drivers seat or the chauifeurs compartment of the vehicle.

Referring more particularly to Figures 3 and 4, l9 designates a cylindrical housing, preferably made of brass, the length of which may be 11%", the inside diameter being for example 1%", and the outside diameter being preferably 1 This cylinder carries a face plate 20, preferably an integral part of the cylinder; Theface plate 20 23 may be about The diameter of the bellows may be 1 and a the length about if, having a maximumextenx is preferably rectangular in shape, asshown in Figure 3, and isprovided with a number of screw holes 2| countersunk for receiving screws or other fastenings whereby the lock casing. or cylinder is secured to the door frame of the vehicle, The

lock bolt is 'shown' at 22 which is adapted to project out through a central opening 23' in the face plate 20 and into the usual socket or striker plate in the edge of the door.- This lockbolt 22 is carried by a follower sleeve 24 *slidably mounted in the cylinder l9 and having its rear end open to receive the bellows 25, whichbellows bears at one end against the end head 26 of the cylinder l9 and at itsother end against the flange 2'! connecting sleeve. and bolt 22. In the projected position of the bolt shown in Figure 4 the flange 21 abuts against face plate 20, which, latter forms a stop for the bolt 22. The bellows 25-and sleeve will be secured together so that when' the bellows. 25 collapses it will draw the bolt 22 with it whereby to the door. The 2Q axially inthe cylinder;

travel of. the follower other connection 29 is connectedinternally to sion and retraction equivalent to Such-a bellows is known as a Hydron, metallic bellows, is commercially available and is composed of inherently resilient, corrugated metal which is readily contractible and expansible.

A bleeder valve 29 is carried by one end of the bellows 25 and maybe mounted within the protection of the-hollow bolt 22. A nipple or the bellows 25 at the head end 26.

Preferably a non-freezing fluid, such as a suitable oil or gelatin, is forced into the bellows, causmately 1%" in diameter with a capacity to oper-- ate four looks. The bellows 3| may be slid into,

cylinder 30 through the left hand end before the 'head 32 is put in place, such head being preferably afterward welded or otherwisepermanently secured. The pipe connection i5 may connect with the bellows 3| by an internally threaded or other nipple 33 on the head 32. The bleeder valve of the bellows 3| is indicated at 34. At the inner end of the bellows, that is at the end remote from head 32, is a plunger rod 35 connected with this end of the bellows and having a sliding bearing through a septum or partition wall 33 mounted within the cylinder 39 inwardly remote from the end head 31 which may be made in one piece with the cylinder or may be made separately and afterwards welded or permanently united with the cylinder 30 when the head 31 is put in place. The plunger rod 35 projects out beyond the end head 31 and has a slotted outer free end into which is received one end of a pitman or link 33, a pivot 39 coupling this end of the link 33 to the rod 35. The other or outer end of link 38, is secured by a pivot pin 40 cccentrically upon a driving. disc 4|. This disc is fixedly mounted upon an operating shaft 42 which projects through a spacing and bearing sleeve 43 having a reduced end 44 which is upset in an opening in a bracket 41. Any suitable means may be utilized to'hold the master control device to the inside face of the'instrument board I! or in a position within the pocket IS. The shaft 42 proiects through the instrument board I! and fixedly receives thereon the crank or operating member l9, which as heretofore stated, lies within the compartment of ,the driver of the vehicle and within easy access to his hand.

The driving disc 4| carries stop pins 45 and 49 which project laterally from that face of the disc which is adjacent to link 33 and rod 35 whereby during .rotary motion of the disc one pin and then the other will impinge against link 38, and act to restrain and arrest the further rotary movementof the disc 4|.

The pins 45 and 43 are preferably located relatively upon the face-of the disc 4| as shown in mately upon the same are and a little over 90 Figure 6 in which they are disposed approxi- ,apart; this being for the purpose of allowing a substantially 180 turn of the disc. For this motion compare the two positions of the disc shown in Figures 6 and '1 and the relative positions of the pins 45 and 46. The pins allow substantially a half rotary motion of the disc and react with the link 38 to hold the rod 35 and the entrained bellows 3| in a dead center locking position shown in Figures 6 and '7, which however is easily broken by reason of the fact that the rotary force is applied through the shaft 42 at the center of the disc 4|. In Figure 6 the pivots 39 and 40 are shown in a substantially dead center position; that is these pivots are substantially in line with the center of the disc or rotary member 4| so that the bellows 3| can neither open nor close;

in fact it is locked in the fully expanded position with the locking bolt retracted. In Figure 7 the pivotpins 39 and 40 are also shown in substantial alinement with the center of the disc or rotary memberdi; in other words the link is in another dead center position diametrically opposite the position shown in Figure 6, so that in the position of the parts shown in Figure '7, the bellows 3| :0

will be in itscompletely collapsed position with the locking bolt projected. The pins 45 and 46 abut opposite sides of the link 39 in these two dead center positions to limit the movement of the disc and link, to notify the operator when the dead center locking positions have been-arrived at, and to tend to hold the parts in the dead center positions until force is applied at the center of the disc to rotate the parts out of such 7 dead center locking position. The bracket 41 has a flange 48 attached by rivets or other appropriate fastenings 49. to the end head 31. This bracket 41 may also have holes 50 for receiving fastenings by which the. device is secured to the instrument board H.

The axis of the cross shaft 42 and the master unit bellows 3| are at right angles. Whenever throwing the latch out or in, the device is positioned in such a manner as to be dead 35 the axis of centered which gives it a positive, locked position. 40

. In operation, when the system is connected up, and closed, with the bleeder valves open at each individual lock, the system is filled with nonfreezing fluid, such as Three-In-One oil or gelatinous substances until the bleeder valves bleed. Then the bleeder valves areclosed and the whole system is hermetically sealed with no possible means of vleakage. Therefore, when the operationtakes place of locking the car doors by throwing the latch or handle l9, for instance, downward all'fou'r bolts at the individual locks are forced outward and held in this locked position against pressure. When the handle 13 is turned back the same positive action occurs.

Of course the handle or crank |9 could be so.

arranged'as to turn through an angle of only 90 to eflect the locking and unlocking of the bolts or the link 33.could have any throw desired. When the master bellows 3| is contracted, as when the disc 4| is rotated to the position shown in Figure 7, the fluid will be forced out into the pipe line l5, l3, l4 and to the various control units causing the bellows 25 therein to expand and project the bolts 22. When the disc 4| is rotated to the-position shown in Figure 8, the master bellows 3| will be expanded and the lock bellows 25 will be thereby contracted withdrawing the bolts 22 from the striker plates. It will be appreciated from the foregoing that the improved device provides a manually oper'ated hydraulic lock operated by the driver of the automobile, and placed in a position to be operated only by him. The devicecau be so arranged that the two rear doors of automobiles may be locked independently from any otherlock system provided by the manu- 7 facturer; or three or four locks may be provided, as the case may require, all operated by the turning of one handle by the operator of the car.

Referring to Figures 6 and 9, it will be understood that the end head 31 is formed with partially round opposed walls 5! and 52 to receive, guide and support the guide rod 35 when that rod is'made of the round cross section shown in the drawings. Above and below these partially round walls ii and are extension spaces Hand 54 for the purpose of enlarging the opening through which the guide rod 35 passes in order to accommodate and receive the link 38 when for instance in the position shown in Figure 7, and when. moving out ofthis position; it being understood that from the position shown in Figure 7, the disc- 4| must rotate counterclockwise to enable the disc to arrive at the position shown in Figure 6. I

It is obvious that various changes and modifications maybe made in the details of construction and design of the above specifically de- What is claimed is: l

.1. In a manually operated hydraulic lock, a lock unit comprisinga face plate, a cylinder casing secured to the rear wall of said face plate. said face plate forming an end plate for the cylindrical casing, a hollow sleevemounted to reciprocate in said casing and having the end thereof remote from the face plate open, said sleeve having a flange at the other end adapted to abut against said face plate, a hollow lock 'bolt carried by said sleeve and slidable through said face plate, a bellows in said casing and projecting into said sleeve and i'astened to said sleeve, a bleeder valve for the bellows housed within said hollow bolt, a master unit situated remotely from said lock unit and comprising a bellows, and means to expand and contract said bellows, and hydraulic fluid connections between the bellows 3L1 zaid master unit and the bellows oi the lock 2. In a locking device of the character de scribed for automobile doors and the like in which a movable bolt locks and unlocks the door, hydraulic means associated with said bolt for both projecting and retracting said bolt, a master hydraulic unit situated in the driver's compartment or the automobile and comprising hydraulic means coupled to the first named hydraulic means, and actuating means for the hydraulic means comprising a rotary disc, a link pivoted at one end to said disc and at the other end to a part of said hydraulic means, a handle connected to the disc for rotating the disc in opposite directions, and pins ,on the disc for encountering said link on predetermined angular pivoted at one end to said disc and at the other end to a part of said hydraulic means, a handle stantially dead-centered positions at opposite.

ends of its half-rotational movements.

4. In a device of the character described, lock units each comprising movable lock bolts for,

the doors of automobiles, and hydraulic devices connected to said bolts ior both projecting and retracting the same, a master unit in the driver's compartment of the automobile comprising a casing, a movable hydraulic device in said casing, fluid connections ,between said master unit hydraulic device and the hydraulic devices of all of the lock'units, a guide rod connected to said master unit hydraulic device, a partition in said casing having a bearing forslidably receiving said guide rod, an. actuating disc, a bracket onsaid casing for supporting said disc with its axis at substantially right angles to the path of movement of said rod, 9, link pivoted to said disc and to said rod, pins projecting from said disc in the path of said link and spaced at slightly over apart angularly on the disc, an actuating shaft sition on'the automobile, a connection between said hydraulic elements, and an actuating device for the master hydraulic element including a rotary member, meansior manually rotating said member in opposite directions, a link pivoted to said rotary member and to the master hydraulic element, and stop means on said rotary member positioned to contact said link on movement of the rotary member in opposite directions through an angular distance of substantially 6. In a device for locking automobile doors and the like, local movable locking bolts'ior thedoors, local hydraulic elements for projecting and retracting saidlocking bolts, a master hydraulic element in a central position upon the 7 vehicle, connections between said master hydraulic element and said local hydraulic elements, and actuating means for the master hydraulic element comprising a rotary member, means for applying rotational force at substantially the center of said rotary member to rotate the same in relatively opposite directions, a link pivoted eccentrically upon said rotary member and also pivoted to a part or said master hydraulic element, andangularly displaced pins on said rotary member projecting into the path oi, said link andpositioned relatively to the link to contact opposite sides of said link when the rotary member is rotated through alternate angular distances of approximately 180.

DANIEL B. DIIIICK. 

